Mahabharata 1.72.20

फलिष्यति न ते विद्या यत्त्वं मामात्थ तत्तथाअध्यापयिष्यामि तु यं तस्य विद्या फलिष्यति

phaliṣyati na te vidyā yattvaṃ māmāttha tattathāadhyāpayiṣyāmi tu yaṃ tasya vidyā phaliṣyati

Our plain-language meaning of this verse is waiting for scholar review.